A microstructure-based failure criterion for Aminadav dolomites

被引:45
作者
Hatzor, YH [1 ]
Palchik, V [1 ]
机构
[1] Ben Gurion Univ Negev, Dept Geol & Environm Sci, Rock Mech Lab Negev, IL-84105 Beer Sheva, Israel
关键词
D O I
10.1016/S0148-9062(98)00004-7
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
The influence of microstructure on the ultimate strength of specimens of dolomite rock is investigated using petrographic and mechanical test data performed on 18 specimens of Aminadav dolomite, a sequence of Cretaceous platform dolomites of wide surface and underground distribution in Israel and adjacent countries. Measurable physical quantities such as mean grain size and bulk porosity are used in the model, together with obtainable mechanical quantities such as the elastic modulus and the level of confining pressure. A criterion that introduces a first step towards predicting brittle heterogeneous rock strength using measurable and meaningful microstructural and mechanical parameters is proposed.; In this paper an attempt is made to quantify the influence of microstructure on the ultimate strength of specimens of dolomite rock, using petrographic and mechanical test data performed on 18 specimens of Aminadav dolomite, a sequence of Cretaceous platform dolomites of wide surface and underground distribution in Israel and adjacent countries. Measurable physical quantities such as mean grain size and bulk porosity are used in the model, together with obtainable mechanical quantities such as the elastic modulus and the level of confining pressure. Thus the proposed criterion introduces a first step towards the achievement of a much broader goal, the prediction of brittle heterogeneous rock strength using measurable dand meaningful microstructural and mechanical parameters.
引用
收藏
页码:797 / 805
页数:9
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